Light Experiments

1. THE INVISIBLE COIN

MATERIALS

- A transparent glass

- A coin

- Water

HOW IT´S MADE

First, you put the glass on top of the coin. Then you add the water 

and you won´t see the coin.

2. THE MOVING ARROW

MATERIALS

- A piece of paper with an arrow drawn on it 

- Two transparent glasses

- Water

HOW IT´S MADE

You stick the piece of paper to the glass and put the other glass in front of it. Finally you add water to the glass and the arrow turns the other way.

Both effects are produced because light travels at different speeds in different materials so it "bends" creating magical effects.

See this video for a demonstration and more explanations.

Hope you like it! 😁